{"product_id":"66t-85520-00-charge-coil-assembly-for-yamaha-40x-e40x-jlm-marine","title":"66T-85520-00 Charge Coil Assembly for Yamaha 40X E40X | JLM Marine","description":"\u003ch2\u003eCharge Coil Assembly – Fits Yamaha 2-Stroke 40HP 40X E40X (1998-2017)\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003eCharge Coil Assembly\u003c\/strong\u003e is engineered as a direct replacement for Yamaha 2-stroke 40HP outboard engines, specifically the \u003cstrong\u003e40X\u003c\/strong\u003e and \u003cstrong\u003eE40X\u003c\/strong\u003e series from 1998 through 2017. Designed for plug-and-play installation, it restores reliable charging system performance to keep your engine running at peak efficiency.\u003c\/p\u003e\n\n\u003cp\u003eThis assembly directly replaces OEM part number \u003cstrong\u003e66T-85520-00-00\u003c\/strong\u003e, ensuring seamless compatibility with your original equipment. Built with highest-grade lamination materials and copper windings rated to 200°C, it delivers durability and consistent output in demanding marine environments.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIncludes connector for hassle-free installation\u003c\/li\u003e\n  \u003cli\u003eAll units are factory-tested before shipment\u003c\/li\u003e\n  \u003cli\u003ePlug-and-play design for quick, direct fitment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eBrand\u003c\/th\u003e\n      \u003cth\u003ePart Number\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eYamaha\u003c\/td\u003e\n      \u003ctd\u003e66T-85520-00\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eYamaha\u003c\/td\u003e\n      \u003ctd\u003e66T-85520-00-00\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Yamaha owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/yamaha-outboard-serial-number-guide-2025\" rel=\"nofollow noopener\" target=\"_blank\"\u003eYamaha Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/yamaha-outboard-parts-diagrams-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eYamaha Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n  \u003ctable\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e40X\u003c\/td\u003e\n        \u003ctd\u003e40HP\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1998-2017\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eE40X\u003c\/td\u003e\n        \u003ctd\u003e40HP\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1998-2017\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e40X M(W\/T)HS\/L\u003c\/td\u003e\n        \u003ctd\u003e40HP\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1998-2013\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eE40X M(W\/T)HS\/L\u003c\/td\u003e\n        \u003ctd\u003e40HP\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1999-2009\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eE40X MHL\u003c\/td\u003e\n        \u003ctd\u003e40HP\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2010-2017\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cp\u003e\u003cem\u003eCompatibility chart is for reference only. Please compare with your faulty unit and the images provided to confirm fitment.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n      \u003cth\u003eValue\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCondition\u003c\/td\u003e\n      \u003ctd\u003eAftermarket 100% Brand New\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eType\u003c\/td\u003e\n      \u003ctd\u003eGenerator Stator Coil\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eQuantity\u003c\/td\u003e\n      \u003ctd\u003e1 PC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLamination Material\u003c\/td\u003e\n      \u003ctd\u003eHighest Grade\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCopper Winding Grade\u003c\/td\u003e\n      \u003ctd\u003eHighest Grade (Resistant to 200°C)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eConnector\u003c\/td\u003e\n      \u003ctd\u003eIncluded\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTesting\u003c\/td\u003e\n      \u003ctd\u003eAll Products Shipped Are Tested\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eYour purchase includes:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Charge Coil Assembly\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eThe package contains all the parts shown in the product images.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisconnect the battery\u003c\/strong\u003e and ensure the engine is completely off before beginning work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLocate the existing charge coil assembly\u003c\/strong\u003e on your Yamaha outboard, typically found under the flywheel cover.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemove the flywheel cover\u003c\/strong\u003e by unscrewing the retaining bolts; set aside all hardware carefully.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisconnect the electrical connector\u003c\/strong\u003e from the old charge coil assembly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemove the mounting bolts\u003c\/strong\u003e securing the old coil to the stator plate.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarefully lift out the old charge coil assembly\u003c\/strong\u003e and inspect the mounting area for corrosion or debris.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePosition the new charge coil assembly\u003c\/strong\u003e onto the stator plate, aligning the mounting holes precisely.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstall and hand-tighten the mounting bolts\u003c\/strong\u003e, then torque to manufacturer specifications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReconnect the electrical connector\u003c\/strong\u003e to the new assembly, ensuring a secure, snug fit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReinstall the flywheel cover\u003c\/strong\u003e and tighten all retaining bolts evenly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReconnect the battery\u003c\/strong\u003e and test the charging system output with a multimeter.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRun the engine at various RPMs\u003c\/strong\u003e to confirm proper charging voltage and system operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this charge coil fits my Yamaha engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your engine's model and year with our compatibility table above. Additionally, compare the images and connector style with your original part to ensure a perfect match before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my charge coil needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include weak or dead battery after running, dim lights at idle, erratic voltage output, or complete loss of charging. A multimeter test showing inconsistent AC voltage from the coil confirms failure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the charge coil assembly?\u003c\/strong\u003e\u003cbr\u003e\nA: Charge coils typically last many years under normal conditions. Replace only when you experience charging system failure or if diagnostic tests reveal faulty output—there is no fixed service interval for this component.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I install this myself, or do I need a professional?\u003c\/strong\u003e\u003cbr\u003e\nA: If you have basic mechanical skills and tools, installation is straightforward—it's a plug-and-play design. However, working under the flywheel requires care; if you're unsure, professional installation is recommended for safety and warranty protection.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: OEM vs. Aftermarket—what's the difference?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n  \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":51981009027385,"sku":"24CC358","price":35.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/12_1f2d32ee-b464-4cca-936f-d90f6b526d33.jpg?v=1772414567","url":"https:\/\/jlmmarine.com\/products\/66t-85520-00-charge-coil-assembly-for-yamaha-40x-e40x-jlm-marine","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}